Do I have Large Gear Case?

[joey nathan]

'75 70HP 3cyl Evinrude Model 70573B - Prop thrust washer is missing and prop has been grinding into lower case.

Thrust Washer for Johnson/Evinrude 318841 127084 is part listed with caveat that it's for large case; how do I tell? Shaft is 1" diameter

Thanks for any help...

 

[Brokeback Johnson]

Re: Do I have Large Gear Case?

The 70 hp motors are all large case.